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Designed for Australian conditions
Engineered to withstand the harshest climates and built to last with premium materials, this product is crafted with care for everyday Australian life.
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40,000+ Australian customers · Australian-owned & operated
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Overview
Simplecom CM303 Ultra HD 3 Way HDMI Switch 3 IN 1 OUT Splitter 4K@60Hz
CM303 is a 3 Way mini HDMI switch that can expand the HDMI input of your HDTV, which can connect more HDMI compatible devices for seamless transitions. Easy plug & play operation, simply connect the HDMI input sources to the HDMI inputs on switch and the HDMI output port to HDTV.
Auto Switching
It will automatically switch to the newly switched on input, or if there is only one active input left. If there are multiple active inputs, you can select the input by press the select button on the switch or use the remote control.
Infrared Receiver and Remote Control
The included infrared receiver and remote control allows the switch to be controlled from a distance. Easily switch between HD devices without having to get up from your seat.
Powered from Connected HDMI Devices
No external power is required to make this switch work, as long as the connected HDMI devices supply sufficient power to the switch.
Features
Support 3 HDMI input devices to share one Screen
3 HDMI inputs and 1 HDMI output
Supported Video Resolutions up to 4K@60Hz*
Supports 12 bit deep colour per channel
Backward compatible with previous HDMI revisions
Supports bandwidth up to 18Gpbs
Supports Auto Switching to active input source port
Plug-and-Play, No external power required for standard HDMI devices
Specifications
HDMI version support: HDMI 1.4, HDMI 2.0
HDCP version support: HDCP1.4, HDCP 2.0
HDMI Input Ports: 3
Video Amplifier Bandwidth: 18Gbps
Support Video Format: 4K (3840X2160) @ 60Hz / 1080p / 1080i / 720p / 576p / 480p / 576i / 480i / 3D Video
Support Video Color: 12 bit Deep Color Per Channel
HDR support: HDR10
Support Audio Format: DTS-HD, Dolby-TrueHD, PCM, LPCM
Power Input: MicroUSB 5V (No external power required for standard HDMI devices)
Operating Temperature: 0°C to 70°C
Operating Humidity: 10% to 85% RH(no condensation)
Dimension: 82x58x19(mm)
Note:
*For 4K@60Hz signal, 18Gbps HDMI cable is required, input and output cable length are limited to 2M
Apple TV and some online streaming box keeps its HDMI port active even in the sleep state. Hence, auto-switching may not work with them. Manual switching can still be used in this scenario.
Devices that require HDCP 2.2 or higher may be incompatible
Package Contents
1x 3 Way HDMI Switch
1x Remote Control
1x IR Receiver
1x USB Power cable
1x HDMI Cable 0.5M
Specifications
Specifications will vary by product. Please refer to the product description above or contact us before ordering if you need a specific measurement.
Shipping & Returns
Shipping
Orders are dispatched from our Sydney and Melbourne warehouses within 1–2 business days of payment. Delivery times from Sydney:
- NSW & ACT: 2–5 business days
- VIC & QLD: 2–7 business days
- SA: 3–8 business days
- TAS: 4–10 business days
- WA: 5–10 business days
Tracking is provided on dispatch. Remote postcodes may incur additional fees.
30-day change-of-mind returns
We offer a 30-day change-of-mind return on select unopened products in original packaging (excluding health/safety items or bulk purchases). Email us within 30 days of delivery to start a return.
A restocking fee of 7–25% applies, plus return postage (unless approved otherwise). Customer-incurred postage costs are non-refundable without prior approval.
Faulty or damaged on arrival
If your product arrives faulty or damaged, contact our support team with your order number, photos/videos of the fault, and the original packaging. Do not return items without a return authorisation.
Warranty
12-month Australian warranty on this product unless noted otherwise. The warranty covers manufacturing defects under normal use.
The warranty does not cover:
- Damage caused by misuse, incorrect installation, or modification.
- Damage during delivery (claim under shipping policy instead).
- Normal wear and tear.
To claim warranty: contact our support team with your order number, photos/videos of the fault, and a brief description. We will assess the claim and offer a replacement, repair, or refund as appropriate.
AUTOMATION
Smart automation, set and forget
Time-saving design with intuitive controls. Set it once and let it work for you, freeing up your time for what matters most.
Complete the set
Frequently bought together
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Total price
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Why Aussies Shop With Auzzi
A registered Australian business with real local support, transparent pricing, and fair returns.
Australian Business
ABN 79 670 758 782. Registered in Australia.
Fast Australia-Wide Dispatch
Ships fast from our Sydney + Melbourne warehouses.
Secure SSL Checkout
Card, PayPal, Apple Pay, Google Pay accepted.
30-Day Returns
Change-of-mind returns within 30 days.